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Revenue Recognition (Details Narrative) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 03, 2018 USD ($) Unit | Mar. 18, 2017 USD ($) Unit | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Revenue |  |  | $ 35,146 | $ 16,884 | $ 16,274 | $ 13,611 | $ 11,491 | $ 13,385 | $ 14,809 | $ 13,379 | $ 81,915 | $ 53,064 | $ 40,958
Product Revenue [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  | 8,491 | 0
Statement of Work #4 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Development project revenue |  |  |  |  |  |  |  |  |  |  |  | 0 | $ 2,470
Statement of Work #5 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  | $ 3,823 | $ 0 |
Avis Budget Car Rental LLC [Member] | Statement of Work #4 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of cellular-enabled rental fleet car management system | Unit |  | 50,000 |  |  |  |  |  |  |  |  |  |  |
Period of installation of equipment |  | 60 months |  |  |  |  |  |  |  |  |  |  |
Equipment for consideration |  | $ 21,270 |  |  |  |  |  |  |  |  |  |  |
Avis Budget Car Rental LLC [Member] | Statement of Work #5 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of cellular-enabled rental fleet car management system | Unit | 75,000 |  |  |  |  |  |  |  |  |  |  |  |
Period of installation of equipment | 60 months |  |  |  |  |  |  |  |  |  |  |  |
Equipment for consideration | $ 33,000 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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